Controlling mechanism for gas-ranges.



PATENTED FEB. 26, 1907.

r. mus.

CONTROLLING MEOHANISM FOR-GAS RANGES.

APPIJOATION FILED MAB..9,1905.

'llllllllllll lillllllln wr/vzsts, I 6.772 77110 0 f which clone has direct connection wit Colo.

Figsecificetion of Esteznt.

Patented fish. B3, 196?.

Application filed Hersh '3, 1935- tleriel No. Z-lllyldfi.

To (ZZZ whom it may concern:

Be it known that l, FRANK e citizen of the United States, o. resident oi Cleveland, county of Cuyshoge, end Stste of Chic, have invented it new and useful improvement in Controlling Meohenisms fr r l ange s, of Wh'ch the following specs .o he, the principle of the invention he'sg herein plsined and the best mode in which l have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to means for controlling automatically the low to the homer of e gas-range its object is to pro vide means for automatically shuttirtg oil thgas from such burner when 9, pot, kettle, or other cooking utensil is not on the range shove it, and thereby prevent e useless consumption. of gas.

The said invention. consists of means hereinei'ter fully described, and perticulerl set forth in the claim.

The annexed drewiri r and the following description set forth in detail certain moons emhodying the invention, such disclosed. means constituting out one of various forms in which the principle of the invention may be used.

In said annexed. drawing, Figure l repre sents it plan view of e. single'hurner gos stove to which my invention hes been epplied. Fig. 2 represents a vertical section taken upon the plane indicated by line 2 2, Fig. 1, parts out. by said plans being, however, shown in. elevation, Fig. 3 represents a deteil sectiorijtcken upon the plane indicated by line 3 3, 2. Fig. l represents a detail section on the plane of the section shown in Fig; 2 and illustrating a modified form of m invention.

- oi the eodotthe ge s-supply pipe 3,

which is usi elly fixedly mounted in the reu e structure, is mounted a, valve-casing C. SllCi cesmgfi sformed with s inein duct 0,

comprising two chambers Fooneected by means of the valve-opening c, the up or of g supgolyyipefi. Upenieg c is controlled by s, verticsllyhio'vsble valve C, having a stem a projecting upwardly Without said casing. The burner, comprising the burner proper, AEroixing-chsihher A, and en intermediate reigns A is detcchehly secured to valve-casing h s loin iriotionioint between the casing or held mixing-chamber and hes communiootion with the lower valve-controlled chsmcasing and communicating with the upper 01'' such chambers is e tube 0*. The irurer end of this pipe passes to s point in the vicinity of the o enings c of the burner A and is provide with at very smell opening 0 Fig. 1. it will therefore seen thst tl'xe duct formed by this pipe affords K183118201 allowing a limited supply of gas to, constantly flow through the casino; 0 out oi hole a which may he ignited to form e continuously-burning pilot-light. The outer end of the valvestem 0 is embraced by e yoke forming the outer end of s lever D, which is fulcrumed upon a standard a, fixed to the casing of the mixingmhsmher A, Pig. 2.. A spring E is attached to the lever and such casing and tends to depress the outer lever end and maintain the valve in a closed osition.

Formed in the fixed top oi the stove is s fisngef, which is adopted to receive it loose spider F shove the homer. One end of this spider rests upon the imier end of the lever D, and the spring E is of a strength such as to normally hold said spider end oil its seatthat is, to overcome the force due to the weight of the-spider alone when the letter is lifted at one end. Thesp-ring is, however, further of s strength such that its ioroe will he overcome when e Weight such as that of as cooking utensil and its contents is pieced upon the spider. The letter when in its normslpositiom-thet is, when raised to the .zr'isximum height by thelever end spring",

(the valve limiting the movement of the lever, as will be readily understooci)is caused to yieldingly'project some little distance shove the plane of the top of the stove, as shown in Fig. 2. A cooking iitensil pls-ced'upoz'i the stove will rest either upon theiixed top or Wholly upon the spider F. In either event the spider will yield and be depressed when a utensil of any of the ordinary dimensions is placed upon the stove; and the valve C "will therefore be caused to rise and open the valve openlngz c. This will allow a iree flow of gas pilot-light and burns required. 011 the removal or the utensil and contents the spider and valve resume their riormolpositions and the gas is cut oil. .Th e pilot-light is however,

to the burner, which gas is ignited by the.

the flow of the gas to the burner and that actuating means (consisting of the yielding spider, lever, and spring) are provided which embody a yielding member, (the: spider,) which is arranged to normally project into that space which when a utensil is placed above the burner on the stove is occupied by such utensil and that such controlling means are connected with the actuating means and operated thereby.

In the form shown in Fig. 4 two modifications of the above-described device are embodied. First, the pipe 0 and duct formed thereby are dispensed with, and as a substi- 1'5 tute therefor a slot 0 is cut in the valve, as shown, which allows a small amount of gas to pass through opening 0 when the valve is seated in its closing position. As in the firstdescribed case, therefore, a small amount of gas is allowed to constantly flow through the casing, but instead of discharging outside the burner discharges within same. This gas may hence be i nited and be kept burning constantly. hen the valve is opened, as above 2 5 described, as a result of the placing of a utensil upon the stove,the full flow of gas is had, as will be readily understood. By means of such arrangement, as expressed in the ordinarily-used terms, the effect is that of turning the gas on full and down low. Second, the spider F instead of being loose is seated'di rectly upon the stovetop in the usual manner,

and the end of lever l) is caused to project upwardly above the plane of'the stove-top, so 5 that when the utensil is placed upon the latter the lever is directly engaged and depressed. In this instance the actuating means consists of the lever and spring only,

the principle, of operation being in nowise affected bysuch change.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed provided the means stated by the following claim or the 5 equivalent of such stated means be employed.

4 I therefore particularly point out and distinctly claim as my in vention In controlling mechanism for gas-ranges, the combination with a gas-sup ply pipe; of a casing connected therewith, sueh casing inc osing two chambers connected by an aperture provided with a valve-seat, the first of such chambers communicating freely with said supply-pipe a pilot-flame tube mounted 5 5 on said casing and communicating with such fixed chamber; a valve adapted to close said aperture and having a stem projecting up' wardly without said casing; said stem being formed near its end with a groove; a burner and mixing chamber therefor, the latter be ing secured to said casing by a plain l'rictiom joint and communicating with the second chamber therein; a lever fulcrumed upon. said 1nixing-chamb er, said I lever havingsene' o end extending into proxiinity"with said burner and the other end formed with a yoke adapted to engage the groove in said valvestem; and a spring joining said lever to said mixing-chamber and normally actuating 'the 0 former to close said valve.

Signed by me this 7th day of March, 1905.

, FRANK CAIS.

'Attest: E. M. NoRLINe, A. E. MERKEL. 

